Wire chain.



D. MOGREGOR.

WIRE CHAIN.

APPLICATION FILED AUG. 19, 1912.

1,086,383. Patented Feb. 10, 1914.

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BY I 7 31M COLUMBIA PLANOGRAPH Co.,wAsmNuTuN. D. c.

DONALD MGGREGOR, 0F TACOMA, WASHINGTON.

WIRE CHAIN.

Specification of Letters Patent.

Application filed August 19, 1912.

Patented Feb. 10,1914. Serial No. 715,754.

To all whom it may concern Be it known that 1, DONALD MoGRnGoR, a citizen of the United States, residing at Tacoma, in the county of Pierce and State of Washington, have invented a new and useful Wire Chain, of which the following is a specification.

This invention relates to chains made of wire, and has for its objects to provide a simple and cheap chain in which each link is of great strength; in which the bar of one link, to which the succeeding link is at tached, is reinforced; in which the tension members are doubled; and which cannot readily become distorted or kinked when it is not under strain.

1 attain these and other objects by the clevices and arrangements illustrated in the accompanying drawings, in which- Figure 1 is a plan of a portion of my improved chain, of medium width; Fig. 2 is a section of one link thereof on the line A-A in Fig. 1; Fig. 3 is a View similar to Fig. 1, but showing the reverse side of the links; Fig. 4 is a plan similar to Fig. 1, in which however the elements have been divided into separated groups at each side of the chain; and Fig. 5 is a similar view of a chain of extra width.

Similar numerals of reference refer to similar parts throughout the several views.

It will be understood that a description of one link of this chain applies equally to all links therein, since each link is similar to every other link, and therefore the following description of a link is to be taken as applying to the whole chain made of such links.

Each link is made of a continuous piece of wire bent and arranged as follows :The center of the piece of wire, of which the link is made,is shapedto formthecross-bar 1 oft-he link, to which the succeeding link is looped. This crossbar 1 may be made substantially straight across the chain, from side to side, or it may have bends therein adapted to hold the loops of the succeeding link and the reinforcing bars of its own link in position as illustrated. At each end of the bar 1 the wire is bent forward, substantially at right angles, to form the side or tension bars 2 of the link. At the forward end of the link the bars 2 are each looped at 3 to pass around the cross bar 1 of the preceding link and then pass toward the rear, forming the reinforcing bars 1, which are bent at their ends at 5 around the bar 1 of the same link, at a point nearer to the center of the bar 1 than the point engaged by the loops 3 of the succeeding link. Thus it will be seen that the forward loop 3 of a link engages a bar 1 of the preceding link between the side bar 2 and the loop 5 at the end of the reinforcing bar 1 thereof, and that therefore when the bars 2 and 4 are close together (Fig. 4) the said bar 1 is of very great strength in transmitting the tension from the bars 2 and 4 thereof to the bars 2 and t of the succeeding link.

In order to prevent the bar 1 of one link from slipping rearward toward the bar 1 of the succeeding link, when the chain is not in tension, I bend the bars 2 and 4 together at the loops 3 (Fig. 2) thus preventing the chain from becoming kinked.

The links are manufactured with the parts bent as above described, except that the ends are not bent completely into the loops 5, so that in order to form a chain of a series of such links, the bars 4 of a link are threaded between the bars 2 and 4 of the preceding link until the loop 3 engages the bar 1 of said preceding link, then the loops 5 of the new link are bent tightly around the bar 1 thereof and the link is therefore locked in position.

It will be understood that this chain may be made of such proportions and sizes will best suit the various uses to which it is to be put.

Having claim 1. A chain comprising a series of links, each comprising a continuous wire bent at its middle to form a cross bar; at each side of the cross bar a tension bar, terminating in a loop engaging the cross bar of the preceding link; and continuing back from said loop to the first named cross bar, to which it is secured at a point spaced from the said side bar and forming a reinforcing bar therefor; the space between the side bar and the reinforcing bar being engaged by the loop of the succeeding link.

described my invention, I

2. In a chain link, the combination of two bars on the cross bar to receive the loops of side bars ;fa crossbbar joining the two side the succeeding link between them. bars; rein orcing ars joined to the side bars T by loops engaging the crossbar of the preced- DOB ALD MCGREGOR' L ing link and passing therefrom to the first Witnesses:

named cross bar and secured thereto, said M. F. MoNEni, reinforcing bars being spaced from the side J. S. ELLSWORTH.

copiel of this patent may be obtained for five cents each, by addressing the Commissioner of Eatents, Washington, D. C. 

